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Queries Find a reference to the most recent paper on SHOE with Jame Hendler as a co- author. Find a reference to the paper on SHOE with James Hendler as a co-author, with the most citations in the World Wide Web Virtual Library: Artificial Intelligence. Find an article or technical report on SHOE by Jim Hendler. Request the Stanford Library to hold a copy of Daniel Dennett's book "Elbow Room" for me. If the Stanford Library does not have a copy of Daniel Dennett's "Elbow Room", order it for me via Interlibrary Loan. Buy a copy of Daniel Dennett's "Elbow Room" for me from amazon.com. Buy me a copy of Daniel Dennett's "Elbow Room" at the cheapest available price. Who in the SRI AI Center has coauthored a paper with a Turing Award winner? a Nobel Prize winner? someone from Iowa?

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Data and Control Flow DAML query is parsed, interpreted and (all or parts) sent to search site DAML Vista DAML Vista searches indexed DB for matching Researcher objects –Recursively searches through imported ontologies –May translate to other ontologies with help of ontology mapping service/engine –May seek help from specialty KB service (e.g., specializing in researchers)

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Services for Preferences Services can be specified for –Site –Class –Ontology (set of classes and properties) Services can be used to define preferences, e.g., Publication-ref Bool... Publication-ref

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Site Services E.g., Person-match service in order to find information about person with name Hendler Issues: –Service has to be specified w/ required input/output parameters –Protocol how to find appropriate services needs to be defined –Software to support interface w/ services